title: Unusual Tc-99m MDP and I-123 MIBG images in focal pyelonephritis.
abstract: A 6-year-old boy presented with an inflammatory syndrome. Because Tc-99m MDP bone scintigraphy revealed increased tracer uptake at the upper pole of the right kidney, further studies were oriented towards a diagnosis of renal or adrenal pathology. I-123 metaiodobenzylguanidine (MIBG) accumulated at the site of the abnormal MDP uptake. The diagnosis of neuroblastoma or allied disorder was excluded on the basis of other investigations and further evaluation, suggesting that the MIBG uptake was a false-positive. Findings on clinical imaging, laboratory findings, Tc-99m DMSA imaging, sonography, and CT scanning were highly suggestive of acute focal pyelonephritis.
authors.affiliation: Department of Nuclear Medicine, Academic Hospital, Vrije Universiteit, Brussel, Belgium.
authors.forename: A
authors.initials: A
authors.lastname: Jacobs
authors.forename: P
authors.initials: P
authors.lastname: Lenoir
authors.forename: M
authors.initials: M
authors.lastname: Delree
authors.forename: J
authors.initials: J
authors.lastname: Ramet
authors.forename: A
authors.initials: A
authors.lastname: Piepsz
mesh_terms: D019797:3-Iodobenzylguanidine; D000208:Acute Disease; D002648:Child; D006801:Humans; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D007668:Kidney / Q000000981:diagnostic imaging*; D008297:Male; D011704:Pyelonephritis / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013669:Technetium Tc 99m Medronate
chemical_list: D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D019797:3-Iodobenzylguanidine; D013669:Technetium Tc 99m Medronate